The thing that throws me though, is that he was acting like the 3 separate exposures our 7D's will take, are not even close to what you need ??? Really ? I mean, sure, I can see if I were trying for some really strong HDR effect, for some totally surreal looking shots {which does sound cool also}

But wouldn't just 3 shots, at the maximum span, help a whole bunch, with blowouts, and noise / lack of detail, in dark corners ?

PS, If this guys system works, why wouldn't it also work to simply get your tripod set up solid, totally locked down, then take 1 shot at 100iso, in full M, then bump it up, take another shot, then again, and again..... I mean, if he is going to be reaching up and switching between preset modes, and such, anyway. Besides, I wouldn't want to tie up all 3 of my preset modes, just for HDR. I'll be shooting a lot of other stuff too....